Vertex is an exploration of John Tejada's range in two parts. The title track and "The Locus Of Points" explores the trackier side of his work, meant mostly for vinyl play. Both tracks make good use of strong wavetable-chorded sounds, which are modulated throughout. The B-side explores the more melodic and arrangement-based side of Tejada's work. "Liquid Mirror" is rich in modular synth layers and "P.L.L." ("Phase Locked Loop") continues this theme with a modulating melodic phrase.